In FireFox: 1. Open Firefox. On the address bar, type – about:config in the URL. Press Enter. 3. You will be warned about Warranty. Click on “I’ll be careful…” 4. On the Filter dialog box type – search.conduit 5. It will display all related entries. Right-click on Preferences Name and Reset.

I would suggest downloading and running these "Free" Programs, Superantispyware, Malwarebytes & CCleaner. They are free but the Websites make you look hard for the "Free" Version, frequently making Trial and Paid for versions more obvious.

I would use CCleaner first as it reduces the number of Files to be scanned..

Open Internet Explorer
Tools
Manage Add Ons
In the new window in Add on types select Toolbars and Extensions
Look for Conduit in the right hand window - click on this to disable
In the same window, on the left hand side click on Search Providers
On the right hand pane select the search provider you want and set this as default
Highlight Conduit and then delete it by clicking on Remove

Check that Internet Explorer is set as default browser by going to Tools, General, click use default or put in the URL of the home page that you want. click on apply